Preclearance happens on Canadian soil, it's not an embassy. They would have to literally kidnap you and take you on a commercial flight to the US. If you're worried about the US kidnapping you from foreign countries, then I strongly suggest you speak to an attorney because I suspect you have bigger things to worry about than a Florida vacation.
[edit] Ah, I see, I didn't catch that you meant on arrival. I suppose that is a risk, but it does seem like you'd really have to make someone's shit list to be admitted only to then immediately be removed.
Or literally anywhere else in the country. A week 1 priority was expanding CBP's Constitution-free purview for expedited expulsion across the entire country.
[edit] Ah, I see, I didn't catch that you meant on arrival. I suppose that is a risk, but it does seem like you'd really have to make someone's shit list to be admitted only to then immediately be removed.